Date: Fri, 21 Oct 2011 22:22:07 -0500 From: "Michael D. Norwick" <mnorwick@centurytel.net> To: freebsd-questions@freebsd.org Subject: Re: Help needed: sound/audio only semi-working Message-ID: <4EA236DF.8040109@centurytel.net> In-Reply-To: <20331.1319246965@tristatelogic.com> References: <20331.1319246965@tristatelogic.com>
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On 10/21/11 20:29, Ronald F. Guilmette wrote: > I've been bringing up a new amd64 box with 8.2-RELEASE. So far I've managed > to get everything installed OK, including a boatload of freshly-built ports. > I've even gotten flash10 working with firefox... well... > > Unfortunately, this is only MOSTLY working. The video works great, but for > audio all I get is absolute silence. > > The really strange thing is that after I followed all the directions here: > > http://www.freebsd.org/doc/en/books/handbook/sound-setup.html > > This command: > > cat /dev/random> /dev/dsp > > *does* produce quite a bit of white noise sound. However when I perform > the other officially recommended basic audio functionality test: > > cdcontrol -f /dev/acd0 play 1 > > with one of my favorite old audo CDs in the drive (AND with that special > little wire running from the back of the drive to my motherboard) all that > happens is that the CD/DVD drive apparently _does_ start to read some stuff... > as evidenced by the blinking access light in the front of the drive... but I > still get no sound out, and YouTube videos still aren't giving me any audio > even though the video seems to be playing perfectly. > > So, um, I am grasping for ideas here on how I can debug this problem furher. > I really have no idea what to do next to get this debugged. I supposed that > if nobody gives me a good suggestion, I'm gonna try swapping out that special > little wire for another one and then try swapping the CD/DVD drive for another > one if that still doesn't solve it. > > Sigh. :-( I just checked and yes, the CD/DVD drive _can_ mount a data CD > alright. No problems doing that. > > So how can it be that this works just fine: > > cat /dev/random> /dev/dsp > > even while this: > > cdcontrol -f /dev/acd0 play 1 > > causes the disk to spin up and read, but otherwise produces utter silence? > > I'm flummoxed. > > Any help would be appreciated. > > > Regards, > rfg > > > > P.S. My motherboard (w/ onboard audio) is a Gigabyte GA-M55Plus-S3G. Here > is what a get when I cat /dev/sndstat: > > FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64) > Installed devices: > pcm0:<HDA Realtek ALC883 PCM #0 Analog> (play/rec) default > pcm1:<HDA Realtek ALC883 PCM #1 Analog> (play/rec) > pcm2:<HDA Realtek ALC883 PCM #2 Digital> (play/rec) > > Additional info: > > % sysctl hw.snd.default_unit > hw.snd.default_unit: 0 > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > Please see my posts on this list as well as on freebsd-multimedia under the subject 'can't access a music cd'. I appear to be experiencing the exact same issue. I am also using snd_hda on freebsd 9. Michael
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